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He said: "I don't know how he managed to get through effectively three checks without a boarding pass.

"We were all bricking it. With the way the world is at the moment, you just want security at airports to be watertight.

"I do feel that Ryanair's checks must have been lackadaisical. I am disappointed."

The lads eventually made it to Seville (Image: Martin Richards / SWNS)

A spokesman for the airline said: "The crew of this flight in London Stansted (20 Nov) requested police assistance after an individual boarded an aircraft but refused to show a boarding card or identification.

"Stansted Police removed and detained this individual.

"The aircraft was subjected to a full security check before the flight departed with a 60 minute delay.